diff --git a/setup/flavors/compose/docker-compose.yml b/setup/flavors/compose/docker-compose.yml
index d173d4cf..579de56f 100644
--- a/setup/flavors/compose/docker-compose.yml
+++ b/setup/flavors/compose/docker-compose.yml
@@ -16,7 +16,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     logging:
@@ -36,7 +36,7 @@ services:
 
   {% if resolver_enabled %}
   resolver:
-    image: mailu/unbound:{{ version }}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     restart: always
     networks:
@@ -45,7 +45,7 @@ services:
   {% endif %}
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     {% if not admin_enabled %}
@@ -59,7 +59,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     volumes:
@@ -69,7 +69,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     volumes:
@@ -83,7 +83,7 @@ services:
     {% endif %}
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     volumes:
@@ -101,7 +101,7 @@ services:
   # Optional services
   {% if antivirus_enabled %}
   antivirus:
-    image: ${DOCKER_ORG:-mailu}/clamav:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}clamav:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     volumes:
@@ -116,7 +116,7 @@ services:
 
   {% if webdav_enabled %}
   webdav:
-    image: ${DOCKER_ORG:-mailu}/radicale:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}radicale:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     volumes:
@@ -125,7 +125,7 @@ services:
 
   {% if fetchmail_enabled %}
   fetchmail:
-    image: ${DOCKER_ORG:-mailu}/fetchmail:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}fetchmail:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     {% if resolver_enabled %}
@@ -139,7 +139,7 @@ services:
   # Webmail
   {% if webmail_type != 'none' %}
   webmail:
-    image: ${DOCKER_ORG:-mailu}/{{ webmail_type }}:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}{{ webmail_type }}:${MAILU_VERSION:-{{ version }}}
     restart: always
     env_file: {{ env }}
     volumes:
diff --git a/setup/flavors/stack/docker-compose.yml b/setup/flavors/stack/docker-compose.yml
index 217667e1..38c07a40 100644
--- a/setup/flavors/stack/docker-compose.yml
+++ b/setup/flavors/stack/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
 # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     logging:
       driver: {{ log_driver or 'json-file' }}
@@ -33,7 +33,7 @@ services:
 
   {% if resolver_enabled %}
   resolver:
-    image: ${DOCKER_ORG:-mailu}/unbound:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     networks:
       default:
@@ -41,7 +41,7 @@ services:
   {% endif %}
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     {% if not admin_enabled %}
     ports:
@@ -54,7 +54,7 @@ services:
       replicas: {{ admin_replicas }}
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/mail:/mail"
@@ -63,7 +63,7 @@ services:
       replicas: {{ imap_replicas }}
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/overrides:/overrides"
@@ -75,7 +75,7 @@ services:
     {% endif %}
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/filter:/var/lib/rspamd"
@@ -91,7 +91,7 @@ services:
   # Optional services
   {% if antivirus_enabled %}
   antivirus:
-    image: ${DOCKER_ORG:-mailu}/clamav:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}clamav:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/filter:/data"
@@ -105,7 +105,7 @@ services:
 
   {% if webdav_enabled %}
   webdav:
-    image: ${DOCKER_ORG:-mailu}/none:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}radicale:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/dav:/data"
@@ -115,7 +115,7 @@ services:
 
   {% if fetchmail_enabled %}
   fetchmail:
-    image: ${DOCKER_ORG:-mailu}/fetchmail:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}fetchmail:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/data:/data"
@@ -129,7 +129,7 @@ services:
 
   {% if webmail_type != 'none' %}
   webmail:
-    image: ${DOCKER_ORG:-mailu}/{{ webmail_type }}:${MAILU_VERSION:-{{ version }}}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}{{ webmail_type }}:${MAILU_VERSION:-{{ version }}}
     env_file: {{ env }}
     volumes:
       - "{{ root }}/webmail:/data"
diff --git a/tests/build.yml b/tests/build.yml
index 4f6e33de..e06327cd 100644
--- a/tests/build.yml
+++ b/tests/build.yml
@@ -3,65 +3,65 @@ version: '3'
 services:
 
   front:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}nginx:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-local}
     build: ../core/nginx
 
   resolver:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}unbound:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-local}
     build: ../services/unbound
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}dovecot:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-local}
     build: ../core/dovecot
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}postfix:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-local}
     build: ../core/postfix
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}rspamd:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-local}
     build: ../services/rspamd
 
   antivirus:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}clamav:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}clamav:${MAILU_VERSION:-local}
     build: ../optional/clamav
 
   webdav:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}radicale:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}radicale:${MAILU_VERSION:-local}
     build: ../optional/radicale
 
   traefik-certdumper:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}traefik-certdumper:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}traefik-certdumper:${MAILU_VERSION:-local}
     build: ../optional/traefik-certdumper
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}admin:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-local}
     build: ../core/admin
 
   roundcube:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}roundcube:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}roundcube:${MAILU_VERSION:-local}
     build: ../webmails/roundcube
 
   rainloop:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}rainloop:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rainloop:${MAILU_VERSION:-local}
     build: ../webmails/rainloop
 
   fetchmail:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}fetchmail:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}fetchmail:${MAILU_VERSION:-local}
     build: ../services/fetchmail
 
   none:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}none:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}none:${MAILU_VERSION:-local}
     build: ../core/none
 
   docs:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}docs:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}docs:${MAILU_VERSION:-local}
     build:
       context: ../docs
       args:
         version: ${MAILU_VERSION:-local}
 
   setup:
-    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX}setup:${MAILU_VERSION:-local}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}setup:${MAILU_VERSION:-local}
     build: ../setup
 
diff --git a/tests/compose/core/docker-compose.yml b/tests/compose/core/docker-compose.yml
index a7c803b7..f64c82b0 100644
--- a/tests/compose/core/docker-compose.yml
+++ b/tests/compose/core/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     logging:
@@ -34,7 +34,7 @@ services:
       - "/mailu/certs:/certs"
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -44,7 +44,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -54,7 +54,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -63,7 +63,7 @@ services:
       - front
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
diff --git a/tests/compose/fetchmail/docker-compose.yml b/tests/compose/fetchmail/docker-compose.yml
index 505fe21b..49c292e9 100644
--- a/tests/compose/fetchmail/docker-compose.yml
+++ b/tests/compose/fetchmail/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     logging:
@@ -34,7 +34,7 @@ services:
       - "/mailu/certs:/certs"
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -44,7 +44,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -54,7 +54,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -63,7 +63,7 @@ services:
       - front
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -77,7 +77,7 @@ services:
 
 
   fetchmail:
-    image: ${DOCKER_ORG:-mailu}/fetchmail:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}fetchmail:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
 
diff --git a/tests/compose/filters/docker-compose.yml b/tests/compose/filters/docker-compose.yml
index 463a4384..94b97399 100644
--- a/tests/compose/filters/docker-compose.yml
+++ b/tests/compose/filters/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     logging:
@@ -34,7 +34,7 @@ services:
       - "/mailu/certs:/certs"
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -44,7 +44,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -54,7 +54,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -63,7 +63,7 @@ services:
       - front
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -75,7 +75,7 @@ services:
 
   # Optional services
   antivirus:
-    image: ${DOCKER_ORG:-mailu}/clamav:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}clamav:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
diff --git a/tests/compose/rainloop/docker-compose.yml b/tests/compose/rainloop/docker-compose.yml
index e7cd577c..98425d7a 100644
--- a/tests/compose/rainloop/docker-compose.yml
+++ b/tests/compose/rainloop/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     logging:
@@ -34,7 +34,7 @@ services:
       - "/mailu/certs:/certs"
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -44,7 +44,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -54,7 +54,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -63,7 +63,7 @@ services:
       - front
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -79,7 +79,7 @@ services:
 
   # Webmail
   webmail:
-    image: ${DOCKER_ORG:-mailu}/rainloop:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rainloop:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
diff --git a/tests/compose/roundcube/docker-compose.yml b/tests/compose/roundcube/docker-compose.yml
index 8c34a68b..b2f415df 100644
--- a/tests/compose/roundcube/docker-compose.yml
+++ b/tests/compose/roundcube/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     logging:
@@ -34,7 +34,7 @@ services:
       - "/mailu/certs:/certs"
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -44,7 +44,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -54,7 +54,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -63,7 +63,7 @@ services:
       - front
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -79,7 +79,7 @@ services:
 
   # Webmail
   webmail:
-    image: ${DOCKER_ORG:-mailu}/roundcube:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}roundcube:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
diff --git a/tests/compose/webdav/docker-compose.yml b/tests/compose/webdav/docker-compose.yml
index e0d5f385..adc094a8 100644
--- a/tests/compose/webdav/docker-compose.yml
+++ b/tests/compose/webdav/docker-compose.yml
@@ -15,7 +15,7 @@ services:
 
   # Core services
   front:
-    image: ${DOCKER_ORG:-mailu}/nginx:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     logging:
@@ -34,7 +34,7 @@ services:
       - "/mailu/certs:/certs"
 
   admin:
-    image: ${DOCKER_ORG:-mailu}/admin:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -44,7 +44,7 @@ services:
       - redis
 
   imap:
-    image: ${DOCKER_ORG:-mailu}/dovecot:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -54,7 +54,7 @@ services:
       - front
 
   smtp:
-    image: ${DOCKER_ORG:-mailu}/postfix:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -63,7 +63,7 @@ services:
       - front
 
   antispam:
-    image: ${DOCKER_ORG:-mailu}/rspamd:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes:
@@ -76,7 +76,7 @@ services:
   # Optional services
 
   webdav:
-    image: ${DOCKER_ORG:-mailu}/radicale:${MAILU_VERSION:-master}
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}radicale:${MAILU_VERSION:-master}
     restart: always
     env_file: mailu.env
     volumes: